DE2130869A1 - Camera with electronic flash device - Google Patents

Description

Minolta Camera Kabushiki Kaisha
Toyota Building, 4-18 Shiomachidori
Minami-ku, Osaka / Japan

Camera with electronic flash device

The invention. Relates to a camera with an automatic connected to the light adjusting electronic flash device is. In particular, such a camera is said to be capable of measuring the radiation time of the electronic flash through the Integration of the reflected light from the object field, which has an electronic flash device that automatically controls the control circuit is provided, the amount of radiation from the electronic By transmitting information about the aperture value set on the camera and the sensitivity of the applied film correctly on or in these control circuits being controlled.

It is already an electronic one that automatically adjusts the light Plitz device known that a control circuit which controls the amount of radiation of the electronic flash by integrating the reflected light from the object. at of such a camera is to control the amount of radiation,

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necessary to control the control circuit of the electronic Manual flash device according to the aperture value of the camera and the sensitivity of the film used to regulate. But if you forget to regulate the control element or regulate it incorrectly, the flash exposure will be canceled not done with proper exposure.

The specific set aperture value and the sensitivity of the applied film are for the regulation and Control the exposure of a camera equipped with an electric shutter necessary elements so that these should of course be set and saved on the camera side. When this specific and stored information can be transmitted to the electronic flash device that automatically adjusts the light, eliminating the need for to manually regulate the radiation control circuit each time against the aperture and the film speed.

It is therefore the object of the invention to create a camera which contains information about the aperture value set on the side of the camera and about the Filra sensitivity automatically transfers to the electronic flash device. In particular, this information is intended to provide the electrical lock and the radiation control circuit of the electronic

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riitzvorrichtung are transmitted. At the same time a Camera can be created which, when using the system measuring through the exchange lens, determines the aperture value is not uniform, this aperture value is corrected and the information about the aperture together with the Information about the film speed is communicated to the radiation control circuit of the electronic flash device.

To solve these problems, a camera with an electronic flash device is proposed according to the invention, in which an electrical shutter with a member cooperating with the aperture setting ring, a film speed setting member, one working mechanism operated in connection with these two elements, one that of the object brightness corresponding power generating photoresistor having light measuring circuit, a closing of the Lock-starting electromagnet and a differential amplification circuit that actuates this electromagnet, whose trigger level is variable, as well as a radiation-controlling circuit with a photo element, which the Object light including the light reflected on the object of the illumination light from the electronic flash tube in the electronic flash device receives one of the power of the Thotoelements integrating integral circuit and a

aurchicommende light when the aperture is open

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Trigger circuit, which extinguishes the electronic flash tube when the integral value of the integral circuit reaches the trigger level, are provided, whereby ^{the release height of the shutter can be changed by the movement of the working mechanism 1} and furthermore one or more means, which the movement of the working mechanism ¹ in the trigger circuit of the transmit electronic flash device and change the trigger level of this circuit are provided and this trigger level is automatically adjustable according to the operation value of the set aperture value of the lens and the set film speed.

The working mechanism preferably consists of a shaft attached to the shaft that is rotatably mounted on the camera housing Film sensitivity adjustment sheet, a first roller fixedly arranged on this axis, one on this axis movably mounted further roller, with a partially toothless gear mounted movably on this axis a radially projecting arm, a planetary roller mounted on this arm, a flexible wire that goes around the rianetenrolle and the further movable Tlolle is guided and one end of which is attached to the first roller and the other end of which is attached to the cooperating link, and one variable sliding resistance, the one on the same (further) axis as the one with the partially toothless

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Gear meshing gear and the one with the distance scale plate meshing gear! are mounted, is supported by the variable resistance the release height actuating the electromagnet of the lock can be changed and at the same time connected to the release circuit the electronic flash device the trigger level of this trigger circuit according to the set Film speed and the set aperture value can be regulated.

An interchangeable lens with a diaphragm device tending to open and a preselection diaphragm ring can be provided and the cooperating member can be in engagement with the preselection diaphragm ring, and an exposure meter of the TTL aperture light measuring system including the photo element of the electric shutter that receives the light passing through the diaphragm opening of the interchangeable lens can be used be, whereby the display by the exposure meter can be regulated by the interaction element according to the movement of the working ^{mechanism 1} , and the release height actuating the electromagnet of the electric shutter and at the same time the release height of the release circuit in the electronic flash device can be changed.

In a special embodiment, the working mechanism

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mus an axle beam with a gear that is with the partial toothless gear is in mesh, and a central axis that rotates concentrically with it and therein Is slidably inserted into the axle body and, preferably in one component with her, a Umschaltplattβ and a gear having a coupling pawl provided on the axle body or the first-mentioned gear wheel and one on the central axis l) between clutch pawl provided on the other gear, preferably over saw-like teeth, with each other in and are disengaged. Through izw. after notching the lfiipplungsklinken can move the central axis against the axle beam be rotated. The central axis can also be the variable Have resistance, the resistance value of which can be changed by rotating the central axis, with by that, in conjunction with the central axis, regulates the display by the light meter and by the variable one Resistance to the electromagnet of the shutter actuating trigger level and the trigger level of the trigger circuit in the electronic flash device changeable are.

It is, therefore, that which can be brought into engagement with the diaphragm ring Cooperating member and the film speed adjuster connected to the working mechanism. Through this Work mechanism gives you the operational value of the two

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set values, namely the aperture and the film speed. The operation value changes the trigger level of the electrical shutter and is also used to regulate the triggering height of the photoelectric element, which controls the amount of radiation containing circuit in this transmitted.

In a camera provided with an electronic flash device, which has a light meter which is the im »» Open state of the aperture of the exchange lens through the aperture measures incident light, the working mechanism interacts with the exposure meter. It is on that Working mechanism provided a Umsehaltglied which the compensates or corrects the deviating value of the aperture value of the opened aperture of the exchange lens.

In a camera in which the working mechanism is controlled by adjusting the aperture value and the film speed Resistance value of the variable resistance is determined and that with an electrical or electronic lock is provided, its speed according to this resistance value and the object brightness is controlled, the control circuit of this shutter is regulated Aperture value and the resistance value of the resistor for the change in film speed as information of Sides of the camera in the radiation control circuit of the

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electronic flash device transmitted to regulate the trigger height.

Further tasks and advantages according to the invention result from the following description of exemplary embodiments based on the attached drawing. Show it:

Fig. 1 is a perspective view of the essential parts in a first imple mentation of the invention,

2 shows an electrical control circuit for the transmission of information for electronic flash device in the first embodiment of the invention,

3 shows the essential parts of a second embodiment of the invention in a perspective representation,

Fig. 4 in a block diagram, the basic structure of the 'transmission mechanism ¹ in the two illustrated Aus leadership forms,

Fig. 5 shows the electrical circuit according to the first embodiment, and

Fig. 6 electrical circuit according to the second embodiment,

In Fig. 1, an embodiment of the invention is shown.

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The lens 1 is installed against the camera housing in the vicinity of the end of the built-in part of the camera in such a way that the plenum adjustment ring 2 is rotatable but immovable in the direction of the optical axis. This diaphragm setting ring 2 is designed to determine the diaphragm value by adjusting the diaphragm scale 2a against the mark la on the outer surface of the lens tube ^1. The diaphragm setting ring 2 is preferably integrally mounted with the connecting projection 2b opposite the camera housing and engaging with a protruding part 3a (a pin or the like) of the cooperating member 3 of the camera housing. The co-operation member 3 is preferably a ring which is biased counterclockwise by the spring 4 so that, as described above, the protruding part 3a comes into engagement with the connecting protrusion 2b, which may have a corresponding opening or the like. One end of the wire 9 is fastened at a point on the outer circumference of the cooperating member 3.

The film speed dial 6 on the camera body is attached to the axis 7, which is rotatably mounted on the camera housing. Under this disc 6 is the first roller 8 attached to the same axle. The other end of the wire 9 is at one point on the outer circumference of this roller 8 attached. This is partially under the first roll 8

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toothless gear 11, the arm 11a of which extends radially, arranged on the same axis 7 with play and by a Spring, not shown in the drawing, is biased clockwise. At the end of the arm 11 a, as shown in the drawing, another roller 12 is rotatably mounted, the Fm Roller 12 is the wire 9, Fter the roller 12 is the further roller 13 rotatably mounted about the axis 7. Of the Rotates 9 also runs around the roller 13 and via the guide roller 14 to the interaction element 3.

So it becomes a differential mechanism as a working mechanism is formed between the film speed setting dial 6 and the aperture setting ring 2.

On the central axis 19, on which the partially toothless Gear 11 engaging gear 18 is attached and rotatably mounted against the camera housing is, the large gear 21 which is engaged with the rack 23a of the display plate 23 is fixed. The movable contact piece 15 and the annular resistor 16 are fastened to the lower end of this central axis 19 is arranged so that it is in contact with this contact piece 15j on part of this resistor 16 is the fixed contact piece 17 attached. On these contact pieces 15, 17 the lead wires, not shown in the drawing, are connected to the variable video

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stand R ₁ , which is shown in Fig. 2 on the side of the camera to form.

The display plate 23, on which the distance scale plate 22 is provided, is designed so that it can be viewed by means of an in the drawing, not shown, by the rotation of the large gear 21 against the field of view frame 24 according to can be moved right and left.

The Tteflex mirror 25 is on the optical axis of the lens 1, arranged as shown in the drawing. In the position in which the light reflected on the reflex mirror 25 is incident, the face circle frame 24 and the pentaprism 26 are arranged. Furthermore, the eyepiece 27 is arranged on the exit side. The object can be observed through this eyepiece 27 will.

In Fig. 2 the electrical circuit for the electronic flash according to the invention is shown, where F the side the flash device and C shows the side of the camera.

Against the additional power source E on the lightning side F are the main capacitor C- ,, the capacitor Co for the ignition, the has resistances on both sides that

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Charge tube / 33 arranged connected in parallel to one another.

32, through the resistor H ^ the thyristor 35 and the second discharge tube

The main condensate, or C, is a condenser for radiation the discharge tube charged by the auxiliary power source E.

_{The two} ends of the capacitor C 2 are connected to one another via the synchronous) switch S on the camera side C, which becomes conductive when the shutter is opened, and via the primary winding of the transformer 31. A connection terminal of the secondary winding of the transformer 31 is connected to the trigger electrode 32 a of the radiation discharge tube 32.

The photo element P is located between the resistor Rc connected to the current source E and the base of the transistor Tr- switched on »As photo element P, e.g. selenium photo cells or a silicone photo cell are suitable, which quickly respond to the Light appeals.

The collector of the transistor Tr ₁ is connected to the capacitor G and to the base of the transistor Tr ₂ . The collector of the transistor Tr ₂ is connected to the base of the transistor Tr ₃ . The emitter of the transistor Tr and the emitter of the transistor Trο are connected to one another. Further

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the variable resistor R ^ on the camera side C between the collector and the emitter of the transistor Tr _{2 is} switched on, and the fixed resistor U ₂ ^ ^{st on} the flash side F between the emitter of the transistor Tr ^, and the current source E is switched on. The fixed resistor I1 is switched into the collector of the transistor Tr ^, and this collector is connected to the gate of the thyristor 35.

In parallel with the thyristor 35, which is connected via the resistor IL the additional power source is connected, are the capacitor C, and the primary winding of the transformer 34 are arranged. One connection terminal of the secondary winding of the transformer 34 is connected to the triggering electrode 33a of the second discharge tube 33 connected ^

A discharge tube is preferably used as the second discharge tube 33 whose impedance is smaller than that of the radiation discharge tube 32 is applied.

In Fig. 3 the working mechanism is according to a second Embodiment of the invention shown in which a cooperation of the end value with the exposure meter at a the one coming through the replacement lens of the aperture

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Light-measuring TTL light measurement is carried out together with the transmission of the information about the aperture value in the electronic flash device and the information about the aperture value of the Austaiisch lens can be switched by means of an aperture switching plate on the camera side. Including the edition of this second version with the body. is almost the same as the first embodiment in FIG. 1, the same parts are provided with the same reference numerals.

The aperture of the automatic lens 1 is given the tendency to fully open, and it is faded down during exposure to the set aperture value of the preset diaphragm ring 2 · down . The projection 2JJ ¹ of this Vorwahllrlendenrings V 2 is engaged with the projection 3a. The gear 52, which is in engagement with the partially toothless gear 11, has a coupling pawl 52a, which is larger than the coupling pawl 54a of the lower. 2 ihnrads 54 engages "The gear 52 is supported ura the central axis 19 with play and with the displaying the Plendenöffnungswert ring 51 preferably as a component ausgeiildet so that move simultaneously ieide.

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At the upper end of the central main axis 19, the plate 53, which switches the lumbar opening value, is attached, and the mark 53a is applied thereon. The large toothed wheel 54 is fastened to the central part of this shaft 19, and its coupling pawl 54a is usually in engagement with the coupling pawl 52a of the gearwheel 52 under the action of a spring (not shown in the drawing). Further, the the Blendenöffnungawert-switching plate 53 is lendenöffnungawert to the V ling indicating 51 on which the scale is plotted 51a for the aperture created and is in sliding contact with its inner rmfang. By pressing down the plate 53, which switches the aperture value, the coupling connection of the two gears 52, 54 is released, and by rotating the plate 53, the relative position of the two gears 52, 54 to one another can be changed, around the scale 51a, which indicates a different aperture, to the mark or to set the pointer 53 a.

At the lower end of the central main axis 19, the movable contact piece 15 is attached, and as with the first Embodiment is through the annular resistor 16 and the fixed contact 17 the variable resistor T i is formed. By pressing down and turning the switching the aperture value on the main axis 19 fixed plate 53 can both, as described above, the. relative position between gears 52 and 54 as well

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the value of the variable resistance R-. be changed.

In the upper part is the phot (resistor 55, the that passing through the pentaprism 26 and the eyepiece 27 Light measures to form the TTL light meter. To the Display of the pointer 57 of the exposure meter 56 connected to the photoresistor 55 shows the position of the O-runkts and the deflection angle according to the rotation of the main axis 19, since the axis 58 is mechanically connected to the main axis 19 by the connecting link 59.

As a result of the above Aufhaus of the inventive working mechanism ^1, the axis 7 is in the first embodiment according to FIG. 1, when the Filmempfindlichkeitseinstellseheibe rotated 6 and 6a the scale is set to the mark 5 in accordance with the film sensitivity is rotated. The first roller 8 attached to the axle 7 also rotates in the same direction. Since the wire 9 is fixed by a certain length / to the cooperating member 3 and the cooperating member 3 is stopped by the engagement of the projection 3a with the connecting projection 2b of the ring 2 according to the set aperture value, the wire 9 is lengthened and shortened by a certain length , and accordingly the other roller 12 influenced clockwise rotates and accordingly the arm 11a becomes the partially toothless / at one end on the first roller 8 and at the other end

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Gear 11 rotated.

By lengthening and shortening the wire 9, the position of the other roller 12 moves together with this great 12 the partially toothless gear 11 is rotated, and the gear 18 meshing with this is also set in rotation. Then the display plate 23, which is connected to the gearwheel 18, moves through the main axis 19 connected large gear 21 is engaged, left and right, and it also moves, relative to the field of view frame 24, the distance scale plate 22.

If the aperture setting ring 2 of the tube of the lens 1 is rotated and another plenden value is chosen, the link rotates 3, because the connecting protrusion 2b of the diaphragm setting ring 2 with the protruding part 3a of the Cooperating member 3 is engaged. While the first sleeve 8 is stationary, the position of the other .'tolle 12 moves just like in the case that the film sensitiveness setting disc 6 is rotated, and the slack and tension of the wire 9 are absorbed. About the extent of the movement of the pulley 12, the partially toothless gear 11 rotates, and the gear 18 meshing therewith is rotated. The large gear 21, which is a component with this gear 18 forms is also rotated. Then it moves with you

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This gear 21 meshing display plate 23, whereupon the distance scale plate 22 relative to the field of view frame 24. Moved.

The distance scale plate 22 moves according to the setting the film speed and the misery value. The range corresponding to the set value is shown on the scale the distance at which the flash exposure is possible is displayed.

The above-mentioned relationship is now based on FIG explained in more detail.

If the sensitivity of the applied film is affected by the Rotation of the adjusting disk 6 set to the mark 5 it means that the mark 4o is on the plenary value board 42 (the scale with the aperture row) on the beti; « Value on the film speed dial 44 is set (in Fig.4 aui loo) # By moving the plenary table 42 is the mark or pointer 41, the 3jzw. the one with the Distance scale plate 43 is in connection, on the relevant. Aperture value '5 fin Fig. 4 Aperture value 2) set. That shows that one can thereby achieve a certain object distance 47 get that the radiation control time 46 of the plaster in connection with the film speed and the aperture value

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a certain time is controlled, according to the Drawing example shown in Fig. 4 shows the radiation time when the film speed according to ASA is on loo, the guide number of the electronic flash is set to 2o and the aperture value is set to F 2, at an object distance from Io m to 1 / φ25ο see. Through the control the radiation control time of the electronic flash connected to the camera body is from 1 / 4oooo to l / l25o the object distance is Io m to 1.82 m.

As a result of the rotation of the gear wheel 18 and the large gear wheel 21, the display plate 23 moves Fixed contact piece 17 and movable contact piece 15 is changed · The two pieces of information about the set film speed and the set aperture value are displayed on the resistor R, whereupon the control of the radiation time of the lightning through the electrical circuit corresponding to these two pieces of information is made possible.

In the following the radiation of the lightning and the control of the radiation time based on the electrical current

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circle according to Fig.2 described.

If the synchronous switch S on the camera side C becomes conductive after the shutter of the camera has been opened, the Trigger electrode 32a of radiation discharge tube 32 charged via capacitor C "and transformer 31 and" fc * Radiation discharge tube 32 is triggered. The radiation discharge tube radiates while discharging the charge of the main capacitor Ο-, »The light depends on the distance to the object and the factor of the room, etc. and the light reflected from the object falls into the one high Response speed possessing photocell P a. As a result, it becomes the light incident on the photocell related current through transistor Tr, amplified and charged on capacitor CL.

As a result, the movable contact piece 15 in Fig. 1 continues to rotate in accordance with the rotation of the film sensitivity setting disk 6 and the aperture ring 2. The length of the annular resistor 16 between the movable contact piece 15 and the fixed contact piece 17 allows the previously set film speed and aperture value to be set to the level of triggering in the circuit controlling the exposure time of the electronic flash.

If now the charging voltage of the capacitor C ~ by the

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variable resistance R- ,, which is variable according to the set film sensitivity and the set aperture value and the fixed resistance Ug reaches a certain level of triggering, the transistor Trg and at the same time the transistor Tr- are conductive, so that the trigger voltage on the gate of the thyristor 35 pressed and the thyristor 35 becomes conductive. The charge of the capacitor Ga is then immediately discharged and the second discharge tube 33 is triggered by the transformer 34. The remaining charge in the main capacitor C 1 is completely discharged through this second discharge tube 33.

With the above-mentioned operation, the radiation from the radiation discharge tube 32 stops immediately.

As a result, the irradiation time of the electronic flash can be adjusted according to the set film speed and the set The aperture value on the side of the camera body can be controlled automatically.

For the second embodiment of the working mechanism * becomes the information in the TTL aperture light measurement measuring the light coming through the taking lens via the aperture value via the taking lens is transferred to the photo resistor 55, and becomes accordingly

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the aperture amount from the aperture value to the preset aperture ring 2 'is transmitted as the information about the aperture value through the cooperating member 3 to the camera body. Therefore, in the case of the TTL aperture light measurement, the amount of dimming from the aperture value becomes the amount of rotation of the interaction member 3 which cooperates with the light meter. The extent of the rotation of the gearwheel 52 is therefore dependent on the set film speed and the amount of glare on the value of the opened aperture at the set aperture value on the preset aperture ring 2 'and interacts with the TTL exposure meter. If the aperture value of the replaceable lens 1 differs, the information about the aperture value must therefore be transmitted to the flash side F. This transmission is made possible in the second exemplary embodiment. To change the relative position between the gear 52 and the large gear 54 due to the difference in the diaphragm opening diameter of the exchange lens 1, the large gear 54 is switched on by pressing the plate 53 to switch the diaphragm opening value Unit forms; " ¹ lowered" whereupon the engagement of the coupling pawl 52a of the gear 52 with the coupling pawl 54a of the large gear 54, which form a switching clutch, is released, so that the mark 53ä on the aperture value switching plate 53 to the aperture value of the Aperture value indicating Hitigä Sl can be set; thereby the

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Relative adjustment between the gear 52 and the large one Gear 54 changed, and the aperture value can also be changed. The main axis attached to the large gear 54 19 is also rotated, so that the movable contact piece 15 attached to this axis also rotates. Of the variable resistance R-, is made in accordance with the or changed by changing the aperture value.

The other processes are the same as in the first embodiment, so that a repeated explanation is not necessary.

In the circuit of the first embodiment shown in FIG Resistance value of the resistor for the change in the film speed can be transmitted as information from the camera side G to the circuit controlling the radiation of the electronic flash. The structure of the working mechanism ¹ , with which the information about the aperture value and the film speed are transmitted by a differential mechanism, is the same as the structure described for FIG

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can be dispensed with. The electronic circuit in Fig. 5 is explained in more detail below. Here are the ignition circuit the radiation tube 32 on the flash side F and the discharge circuit of the discharge tube 33 for the Extinguishing the lightning with those shown in Fig.2 second embodiment same.

In which the amount of radiation controlled circuit which integrates by a Whether] ect reflected light and the power emitted when the integrated amount reaches a predetermined value, the photovoltaic element P is switched between the resistor Itg and the base of the transistor Tr. ₁ As in the previously described embodiment, ZoB. uses a selenium photo cell or a silicone photo cell that responds quickly to light.

\ The collector of the transistor Tr ₁ is connected to the capacitor C "and to the base of the transistor Tr ₂ . The emitter of the transistor Tr ^ and the emitter of the transistor Tr ^ are connected to one another and connected to the terminal d of the changeover switch S «of the electrical locking control circuit.

_{The common grid series resistor R 2 is} switched on at the emitters of the transistor Tr ₂ and of the transistor Tr ". The collector of the transistor Tr ₂ is connected via the resistor R ₆ to the base of the transistor Tr, from which the

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Differential amplification circuit is formed. the Easis of the transistor Tr «is to the terminal b of the changeover switch S-, connected to the Karaera G side.

The switches S, and S "on the camera side C are respectively from the actuation of the lock from terminal a to terminal b and from terminal c to terminal d.

The collector of the transistor Tr ^ is connected to the fixed resistor Ro and the gate of the thyristor 35 connected.

In the electrical locking circuit on the camera side G

at
aind'die current source E via the electromagnet M the transistor Tr ^ ₁ via the switch S "the variable resistor R- ,, via the grid resistor R ₇ the two transistors Trc, Tr ₆ and the capacitor Cc the rhotowideratand Io connected in parallel to each other .

The grid series resistor R ^ is connected to the emitters of the two transistors Tr ^, Tr ₆ . The collector of the transistor Tr ₁ - is connected to the base of the transistor Tr ₇ and the resistor Rg. The base of the transistor Tr ₆ is connected in parallel to the capacitor C ^ and the switch Sq, which is switched off when the closure is opened

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what constitutes the differential amplification circuit will.

6 shows the second embodiment of the previously described working mechanism ¹ , in which, if the aperture value cooperates with the exposure meter of the electric shutter in the TTL aperture light measurement, the information about the aperture value of the interchangeable lens is switched by installing the aperture value switching plate In this second embodiment, the actuation takes place according to the set aperture value and the film sensitivity in the electrical control circuit on the side of the camera, and the resistance value of the regulating resistor corresponding to this value is used as information about the set aperture value and the film sensitivity in the electrical circuit that controls the amount of radiation transmitted to the electronic flash device. The mechanical structure of this embodiment is the same as the structure in FIG. 3, and the structure of the flashing side F in the electrical circuit is the same with the structure according to * - FIG. 5, so that an explanation of this can be dispensed with. On the camera side C of the electrical circuit, the transistor Tro is provided on the side of the anode of the capacitor C, the collector of the transistor Tr "being connected to the base of the transistor Tr ^ and to the base of the transistor Trg the capacitor C ₇ and the Diode D ₁ are excluded in parallel · Furthermore, the switch S, is between

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the capacitor C- and the diode D, provided, the straight is locked before opening the shutter.

When taking in daylight, the amount of light falling into the photoresistor R is logarithmically compressed by the diode D- ^ and the voltage between the ends of the diode D is transferred to the capacitor CL. When taking the flash, the switch Sg is switched from contact e to contact f and the resistor R is connected to the delay _{capacitor G 5} , whereupon the predetermined exposure of 1 / 3o see. is made.

^i: When the flash is picked up, switches S ^, Sg and Sp are connected to contacts a, c and e, respectively. The resistance value set on the variable resistor R-, namely 16 in Fig. Z ₁ shows the value of the information about the aperture value of the interchangeable lens, the information about the aperture value superimposed on the preset aperture value and the information about the set film speed. This "operational value" is stored in the capacitor G ^ and the information given to the logarithmic compression about the brightness of the object is transmitted to the capacitor C- and stored there. When the shutter is released, the switch S ^ is opened first. The movable mirror is then swiveled and stopped down to the preselected aperture value immediately after *

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the switch S "is open, the voltage stored in the capacitor C- is logarithmically expanded by the transistor Tr" and the capacitor G ₅ is charged with this voltage. If this voltage corresponds to the voltage stored in the capacitor Cg, the information in the differential amplification circuit via the transistor Tr "excites the electromagnet M. When the flash is picked up, the switch S" is switched to contact f and the capacitor G ₅ to the resistor H ₉ connected to a delay circuit of about 1 / 3o sea. The switches S, and Sq are switched from the contacts a, t to the contacts b, d before the exposure. The information about the aperture value of the exchange lens, the fade-down value faded in from the aperture value into the preset aperture value and the set film speed are transmitted through the resistor H- of the electronic flash device in order to control its radiation.

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Claims (1)

21 j O B B 9 T at ent of sp e Riich (U / camera with electronic flash device, thereby .gekeanxeisih.net, that an electric lock with ei.noHi with the Blendoneinstellring (2j ζ asaramenwirkenden GIi dd _{Qi; jin ui FiImefiipfindlichkeitaeinatellglied (6), a Ys in rM ....- Oung with this Zusammenwirkungsgl.ied (3) and the film sensitive.? - "keitseinatell member () activated working mechanism, a light-mass circuit that generates the photoresistance corresponding to the object reverberation, an electromagnet (M) that causes the lock to close, and a differential amplification that activates this electromagnet (M) is mutable, as well a radiation-controlling circuit with a photo element (P), which receives the object light including the light from the object reflected by the light of the lightning bolt from the electronic ßlii-zröhra in the dex olöktronisolien lightning device, ninoiu die Leiotiut ^ des ϊϊΐ'Λο ^ Ιν [Y) .Lntegi \ Le.'i- £ md.: - m ίητ.jgi'alstroriik.iG.iü and jii-ea Aue ι nteyr -! word of the Ini.oä'ralrtt-VDjakrolat. ·· ϊ d> .o Λ · ΐ3ΐ height erroioht _} ^: are provided, BAD ORIGINAL 1 0 9 Cl 5 3/1 7 0 S. The movement of the work mechanism enables the release height of the circuit to be changed and further means which transfer the movement of the working mechanism to the release circuit of the electronic flash device and which change the release position of this circuit are also possible and iliasa carcase height just after the operation- •: v3vt of the adjusted cellton Blsndsnwerts of the lens (1) and the η FilnietiT) iindliehlichkeit iat automatically adjustable, Saaera ηaoh claim I ₀
tladuroh marked,
dfi-33 the working mechanism consists of one at the am i rotatably mounted axis (7) attached film- = iitesinstellsshaiie (6) ₀ one on this axis (7) -iOöt aiigsordnötsn first Roll® {S), one on cLieasr A,: hse (7) i> sw3g? jar mounted further Holle (131, a partially toothless gearwheel ί11 movably mounted on this A'Cnss (7)) with a radially orspriagenden arm (lla), an an dioseia arm (Hai gslagartsn plastic roll (12), a flezib = lsi). Wire (9), the mn dia Planet euro lie 113) and the other A-3'7-3g]> ars Solls | 13) gs and its siiios iSnd® to rl sr öA ^ bai! Holla (S) and dsssea other ends aia ZuB & mTäsnvjirk ^ nga · = · Member (-31 iss consolidates is sov / i® a variable sliding! / Id ^ raiäiid (16), dsr on the same axle (19) _s aa £? v that with you. ”partly tmgeaaJhnten Zäharad (Ii) in Singrifj; ateliende BATH ORIGINAL .10 9 8 5 3 / 1- 1 θ S Gear (18) and the one with the distance scale plate (22) meshing gear (21) are attached, is mounted, wherein by the variable resistance (16) the the The release height actuating the electromagnet (M) of the lock can be changed and at the same time connected to the release circuit the electronic flash device, the trigger level of this trigger circuit according to the set film speed and the set aperture value can be regulated. 3. Camera according to claim 1 or 2 _t
characterized, that an exchange lens il) is provided with a diaphragm device having the tendency to open and a preselection diaphragm ring (2 ¹ ), the interaction ^{element (3) engages with the preselection diaphragm ring (2 1} ) and an exposure meter (56) of the TTL aperture light measurement system including the the light-receiving photo-element (P) of the electrical shutter is provided through the aperture of the damming lens (1), whereby the display by the light meter (56) and the electromagnet (M ) the actuating height of the electric lock and at the same time the height of the trip circuit _4_ ORIGINAL BATHROOM 109853/1705 can be changed in the electronic blitζ device. 4 «camera according to claim 3,
marked by an axle body with a gear (52) which is ^{in engagement with the partially toothless gear (II) of the working mechanism 1} , and a central axis (19) which is inserted concentrically rotatable with it and slidable therein in the axle body and, preferably in a component with it, a switching plate (53) and a gear (54), a coupling pawl (52a) provided on the axle body or the gear (52) and one provided on the central axis (19) or on the gear (54) The coupling pawl (54a) can be brought into and out of engagement with one another, preferably via saw-like teeth. 5 camera according to claim 4,
characterized, that the central axis (19) by releasing the coupling pawls (52a, 54a) is rotatable against the axle body. 6. Camera according to one of claims 4 and 5, characterized in that that the central axis (19) is the variable resistance (16), the resistance value of which is due to the rotation 109853/1705 BATH ORIGINAL the central axis (19) is changeable, whereby the display by the in connection with the central axis (16) Light meter regulating means and the variable resistor (16) which the electromagnet (M) of the Release height actuating the shutter and the release height of the release circuit in the electronic flash device are changeable. BATH ORIGINAL 109853/1705